How Long Does a Spider Live In a House?

Spiders are a common sight in homes all around the world. While some people might be scared of them, spiders play an important role in controlling the population of other pests in the house. Understanding the lifespan of common house spiders can help homeowners better manage these creatures in their homes.

Common House Spiders

A. Description and Identification of Common House Spiders

  1. American house spider: American house spiders are small, brown, or gray in color and typically have a series of chevron-shaped markings on their backs.
  2. Cellar spider (daddy longlegs): Cellar spiders are small, light brown or gray, and have long legs. They are commonly referred to as “daddy longlegs” but should not be confused with harvestmen, which are not spiders.
  3. Jumping spider: Jumping spiders are small and compact with a round body, short legs, and large eyes that give them excellent vision.
  4. Wolf spider: Wolf spiders are large and robust with thick, hairy bodies and long legs. They are typically brown or gray in color and can move very quickly.
  5. Brown recluse spider: Brown recluse spiders are known for their distinctive violin-shaped markings on their backs. They are typically light to medium brown in color.

B. Benefits of having spiders in the home

  1. Pest control: Spiders are natural predators and will help control the population of other pests in the house, including flies, mosquitoes, and ants.
  2. Ecosystem balance: Spiders play an important role in maintaining the balance of ecosystems. By controlling the population of other pests, they help prevent overpopulation and ensure that other species can thrive.

Factors Affecting Spider Lifespan in Homes

A. Species

Different spider species have different lifespans. While some species may only live for a few months, others can live for several years.

B. Availability of Food and Prey

Spiders need a steady supply of food to survive. If there are not enough insects or other prey in the house, spiders may not live as long.

C. Environmental Conditions

  1. Temperature: Spiders are cold-blooded, which means their metabolism and activity levels are influenced by temperature. Higher temperatures can increase spider activity, while colder temperatures can slow them down or even cause them to hibernate.
  2. Humidity: Spiders also need a certain level of humidity to survive. If the air in the house is too dry, spiders may not be able to survive.
  3. Shelter: Spiders need a safe place to hide and build their webs. If there are not enough suitable hiding places in the house, spiders may not be able to survive.

D. Predators and Competition

Spiders may face competition from other spider species or predators like cats or birds, which can also affect their lifespan.

Lifespan of Common House Spiders

Here are the lifespans of the five most common house spiders:

  1. American house spider: typically lives for about one year.
  2. Cellar spider (daddy longlegs): can live for up to three years.
  3. Jumping spider: typically lives for about one year.
  4. Wolf spider: can live for up to two years.
  5. Brown recluse spider: can live for up to two years.

How to Manage Spiders in Your Home

A. Prevention Methods

  • Sealing cracks and gaps: Spiders can enter the house through small cracks and gaps in windows, doors, and walls. Sealing these gaps can help prevent spiders from entering the house.
  • Regular cleaning and dusting: Keeping the house clean and free of clutter can help reduce the number of hiding places for spiders.
  • Proper storage of food and waste: Spiders are attracted to food and waste, so proper storage of these items can help reduce the number of spiders in the house.

B. Non-lethal spider control

  1. Catch and release: If you find a spider in your house, you can use a cup and a piece of paper to gently capture it and release it outside.
  2. Natural repellents: Some essential oils, such as peppermint or eucalyptus oil, are natural spider repellents. Spraying a mixture of water and a few drops of these oils around the house can help keep spiders away.

C. When to consider extermination

  1. Venomous spiders: If you suspect that you have a venomous spider in your house, such as a brown recluse or black widow spider, it is important to seek professional extermination services.
  2. Infestations: If you have a large number of spiders in your house, it may be necessary to call a professional exterminator to help control the population.

Frequently Asked Questions

A. Do spiders die in the winter?

Spiders can die in the winter if they are not able to find a suitable place to hibernate or if the temperature drops too low for them to survive.

B. How long can a spider survive without food or water?

Spiders can survive for several weeks without food, but they need a steady supply of water to survive.

C. Can spiders reproduce in the house?

Yes, spiders can reproduce in the house if they have access to a mate and suitable conditions for egg-laying.

D. Are spiders more active at night?

Many species of spiders are more active at night, but this can vary depending on the species and environmental conditions.


A. Recap of main points

Spiders play an important role in controlling the population of other pests in the house and maintaining the balance of ecosystems. Understanding the factors that affect spider lifespan and how to manage spiders in the house can help homeowners coexist with these creatures.

B. Encouragement of responsible spider management in homes

Homeowners are encouraged to take a responsible approach to spider management in the house, using prevention methods and non-lethal control methods whenever possible.

C. Acknowledgment of the important role spiders play in ecosystems

Spiders are an important part of the ecosystem and play a crucial role in maintaining balance and preventing the overpopulation of other species. By understanding and respecting spiders, we can better appreciate the role they play in our world.


  • Nathan Collins

    Having spent years working in the landscaping industry, Nathan Collins has cultivated a wealth of knowledge about the natural world. He is committed to helping others appreciate the beauty in their backyards, whether it's through identifying rare rocks and minerals or crafting the perfect landscape.

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